package org.owasp.webgoat.lessons.RoleBasedAccessControl;

import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;

import org.owasp.webgoat.lessons.AbstractLesson;
import org.owasp.webgoat.lessons.DefaultLessonAction;
import org.owasp.webgoat.lessons.LessonAction;
import org.owasp.webgoat.session.ParameterNotFoundException;
import org.owasp.webgoat.session.UnauthenticatedException;
import org.owasp.webgoat.session.UnauthorizedException;
import org.owasp.webgoat.session.ValidationException;
import org.owasp.webgoat.session.WebSession;

/*******************************************************************************
 * 
 * 
 * This file is part of WebGoat, an Open Web Application Security Project
 * utility. For details, please see http://www.owasp.org/
 * 
 * Copyright (c) 2002 - 2007 Bruce Mayhew
 * 
 * This program is free software; you can redistribute it and/or modify it under
 * the terms of the GNU General Public License as published by the Free Software
 * Foundation; either version 2 of the License, or (at your option) any later
 * version.
 * 
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 * FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
 * details.
 * 
 * You should have received a copy of the GNU General Public License along with
 * this program; if not, write to the Free Software Foundation, Inc., 59 Temple
 * Place - Suite 330, Boston, MA 02111-1307, USA.
 * 
 * Getting Source ==============
 * 
 * Source for this application is maintained at code.google.com, a repository
 * for free software projects.
 * 
 * For details, please see http://code.google.com/p/webgoat/
 */
public class DeleteProfile extends DefaultLessonAction
{

    private LessonAction chainedAction;


    public DeleteProfile(AbstractLesson lesson, String lessonName,
	    String actionName, LessonAction chainedAction)
    {
	super(lesson, lessonName, actionName);
	this.chainedAction = chainedAction;
    }


    public void handleRequest(WebSession s) throws ParameterNotFoundException,
	    UnauthenticatedException, UnauthorizedException,
	    ValidationException
    {
	getLesson().setCurrentAction(s, getActionName());

	int userId = getIntSessionAttribute(s, getLessonName() + "."
		+ RoleBasedAccessControl.USER_ID);
	int employeeId = s.getParser().getIntParameter(
		RoleBasedAccessControl.EMPLOYEE_ID);

	if (isAuthenticated(s))
	{
	    deleteEmployeeProfile(s, userId, employeeId);

	    try
	    {
		chainedAction.handleRequest(s);
	    }
	    catch (UnauthenticatedException ue1)
	    {
		System.out.println("Internal server error");
		ue1.printStackTrace();
	    }
	    catch (UnauthorizedException ue2)
	    {
		System.out.println("Internal server error");
		ue2.printStackTrace();
	    }
	}
	else
	    throw new UnauthenticatedException();

	updateLessonStatus(s);
    }


    public String getNextPage(WebSession s)
    {
	return RoleBasedAccessControl.LISTSTAFF_ACTION;
    }


    public void deleteEmployeeProfile(WebSession s, int userId, int employeeId)
	    throws UnauthorizedException
    {
	try
	{
	    // Note: The password field is ONLY set by ChangePassword
	    String query = "DELETE FROM employee WHERE userid = " + employeeId;
	    //System.out.println("Query:  " + query);
	    try
	    {
		Statement statement = WebSession.getConnection(s)
			.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
				ResultSet.CONCUR_READ_ONLY);
		statement.executeUpdate(query);
	    }
	    catch (SQLException sqle)
	    {
		s.setMessage("Error deleting employee profile");
		sqle.printStackTrace();
	    }
	}
	catch (Exception e)
	{
	    s.setMessage("Error deleting employee profile");
	    e.printStackTrace();
	}
    }


    public void deleteEmployeeProfile_BACKUP(WebSession s, int userId,
	    int employeeId) throws UnauthorizedException
    {
	try
	{
	    // Note: The password field is ONLY set by ChangePassword
	    String query = "DELETE FROM employee WHERE userid = " + employeeId;
	    //System.out.println("Query:  " + query);
	    try
	    {
		Statement statement = WebSession.getConnection(s)
			.createStatement(ResultSet.TYPE_SCROLL_INSENSITIVE,
				ResultSet.CONCUR_READ_ONLY);
		statement.executeUpdate(query);
	    }
	    catch (SQLException sqle)
	    {
		s.setMessage("Error deleting employee profile");
		sqle.printStackTrace();
	    }
	}
	catch (Exception e)
	{
	    s.setMessage("Error deleting employee profile");
	    e.printStackTrace();
	}
    }


    private void updateLessonStatus(WebSession s)
    {
	// If the logged in user is not authorized to be here, stage is complete.
	try
	{
	    int userId = getIntSessionAttribute(s, getLessonName() + "."
		    + RoleBasedAccessControl.USER_ID);

	    if (!isAuthorized(s, userId,
		    RoleBasedAccessControl.DELETEPROFILE_ACTION))
	    {
		s
			.setMessage("Welcome to stage 2 -- protecting the business layer");
		setStage(s, 2);
	    }
	}
	catch (ParameterNotFoundException e)
	{}
    }

}
